Silver nanoparticle
（重定向自Nanosilver）
![](/Images/godic/202501/29/C60-rods2547.png")
![A general representation of the synthesis and applications of biogenically synthesized silver nanoparticles using plant extract.](/Images/godic/202501/29/A_general_representation_of_the_synthesis_and_applications_of_biogenically_synthesized_silver_nanoparticles_using_plant_extract2547.png")
![General procedure for coating colloid particles in silica. First PVP is absorbed onto the colloidal surface. These particles are put into an solution of ammonia in ethanol. the particle then begins to grow by addition of Si(OET4).](/Images/godic/202501/29/Nanoparticle_coating_with_silica2547.png")
Silver nanoparticles are nanoparticles of silver of between 1 nm and 100 nm in size. While frequently described as being 'silver' some are composed of a large percentage of silver oxide due to their large ratio of surface-to-bulk silver atoms. Numerous shapes of nanoparticles can be constructed depending on the application at hand. Commonly used are spherical silver nanoparticles but diamond, octagonal and thin sheets are also popular.